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Glossary
297Web Tools Version 3.1.x/4.1.x User Guide
RSCN
Registered State Change Notification. A switch function that allows notification of fabric changes
to be sent from the switch to specified nodes.
RX_ID
Responder Exchange Identifier. A 2-byte field in the frame header used by the responder of the
Exchange to identify frames as being part of a particular exchange.
SAN
Storage Area Network. A network of systems and storage devices that communicate using Fibre
Channel protocols.
See also fabric.
SAN Switch
A switch whose main task is to connect nodes into the fabric.
See also core switch.
SCSI
Small Computer Systems Interface. A parallel bus architecture and protocol for transmitting large
data blocks to a distance of 15 - 25 meters.
SDRAM
Synchronous Dynamic Random Access Memory. The main memory for the switch. Used for
volatile storage during switch operation.
See also flash.
Sequence
A group of related frames transmitted in the same direction between two N_Ports.
Service Rate
The rate at which an entity can service requests.
See also request rate.
SFF
Small Form Factor.
SFP Cable
The latest innovation in high-speed copper cabling for Fibre Channel and InfiniBand. It
incorporates the SFP module directly onto the cable assembly, eliminating the need for a separate
SFP copper module and an HSSDC2 cable assembly.